Patents by Inventor Patrick Guyot

Patrick Guyot has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Bi- and Trifunctional organolithium initiators and applications thereof
    Patent number: 4311818
    Abstract: New organo-lithium initiators, their synthesis, and their use. The initiators have the formula: ##STR1## in which R" is either a hydrogen atom or a methyl radical; either n is 1, in which case R'=H and m and p are integers, the sum of which is between 0 and 10 inclusive, or n is 2, R' then being an alkyl radical of 2 to 8 carbon atoms and m=p=o; and R is an alkyl radical of 1 to 4 carbon atoms.The initiators are prepared by reacting compounds of the formula; ##STR2## with an alkyl-lithium RLi in a non-polar solvent in the absence of any polar solvent or complexing agent.The initiators are used to prepare polydienes of high stereoregularity by reacting with a diene, and the polydiene is used to prepare a three-block or star copolymer by reacting with an anionically polymerizable monomer.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: January 19, 1982
    Assignees: Societe Chimique des Charbonnages-Cdf. Chimie, Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Pierre Sigwalt, Patrick Guyot, Michel Fontanille
  • Organo-lithium compounds and a process for their preparation
    Patent number: 4264749
    Abstract: Organo-lithium compounds of the formula: ##STR1## wherein R is an alkyl group of up to 5 carbon atoms, R' is either hydrogen or an alkyl group of up to 5 carbon atoms and n is an integer from 2 to 10. These bifunctional organo-lithium compounds are prepared without the use of any polar or complexing agent and are useful as polymerization initiators for the production of block copolymers.
    Type: Grant
    Filed: July 31, 1979
    Date of Patent: April 28, 1981
    Assignee: Societe Chimique des Charbonnages
    Inventors: Pierre Sigwalt, Patrick Guyot, Michel Fontanille, Jean-Pierre Vairon
  • 1,1,1 Tris-(4-isopropenyl-phenyl)ethane
    Patent number: 4236035
    Abstract: New organo-lithium initiators, their synthesis, and their use. The initiators have the formula: ##STR1## in which R" is either a hydrogen atom or a methyl radical; either n is 1, in which case R' = H and m and p are integers, the sum of which is between 0 and 10 inclusive, or n is 2, R' then being an alkyl radical of 2 to 8 carbon atoms and m =p =0; and R is an alkyl radical of 1 to 4 carbon atoms.The initiators are prepared by reacting compounds of the formula: ##STR2## with an alkyl-lithium RLi in a non-polar solvent in the absence of any polar solvent or complexing agent.The initiators are used to prepare polydienes of high stereoregularity by reacting with a diene, and the polydiene is used to prepare a three-block or star copolymer by reacting with an anionically polymerizable monomer.
    Type: Grant
    Filed: April 5, 1979
    Date of Patent: November 25, 1980
    Assignees: Societe Chimique des Charbonnages-CdF CHIMIE, Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventors: Pierre Sigwalt, Patrick Guyot, Michel Fontanille
  • Diphenyl compounds that are intermediates in preparation of polymerization initiators
    Patent number: 4181684
    Abstract: Organo-lithium compounds of the formula: ##STR1## wherein R is an alkyl group of up to 5 carbon atoms, R' is either hydrogen or an alkyl group of up to 5 carbon atoms and n is an integer from 2 to 10. These bifunctional organo-lithium compounds are prepared without the use of any polar or complexing agent and are useful as polymerization initiators for the production of block copolymers.
    Type: Grant
    Filed: August 5, 1977
    Date of Patent: January 1, 1980
    Assignee: Societe Chimique des Charbonnages--CdF CHIMIE
    Inventors: Pierre Sigwalt, Patrick Guyot, Michel Fontanille, Jean-Pierre Vairon
  • Bi-and trifunctional organolithium initiators
    Patent number: 4161494
    Abstract: New organo-lithium initiators, their synthesis, and their use. The initiators have the formula: ##STR1## IN WHICH R" is either a hydrogen atom or a methyl radial; either n is 1, in which case R' = H and m and p are integers, the sum of which is between 0 and 10 inclusive, or n is 2, R' then being an alkyl radical of 2 to 8 carbon atoms and m = p = 0; and R is an alkyl radical of 1 to 4 carbon atoms.The initiators are prepared by reacting compounds of the formula: ##STR2## WITH AN ALKYL-LITHIUM RLi in a non-polar solvent in the absence of any polar solvent or complexing agent.The initiators are used to prepare polydienes of high stereoregularity by reacting with a diene, and the polydiene is used to prepare a three-block or star copolymer by reacting with an anionically polymerizable monomer.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: July 17, 1979
    Assignees: Societe Chimique des Charbonnages CDF Chimie, Agence Nationale de Valorisation de la Recherche
    Inventors: Pierre Sigwalt, Patrick Guyot, Michel Fontanille
  • Organo-lithium compounds and a process for their preparation
    Patent number: 4067917
    Abstract: Organo-lithium compounds of the formula: ##STR1## wherein R is an alkyl group of up to 5 carbon atoms, R' is either hydrogen or an alkyl group of up to 5 carbon atoms and n is an integer from 2 to 10. These bifunctional organo-lithium compounds are prepared without the use of any polar or complexing agent and are useful as polymerization initiators for the production of block copolymers.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: January 10, 1978
    Assignees: Societe Chimique des Charbonnages-Cdf Chimie, Agence Nationale de Valorisation de la Recherche
    Inventors: Pierre Sigwalt, Patrick Guyot, Michel Fontanille, Jean-Pierre Vairon